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larsacus/mach_timer.mm

Created November 14, 2011 20:43
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High-Resolution Timer Using Mach Time
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mach_timer.mm
#include "mach/mach_time.h" //NOT #import
mach_timebase_info_data_t mach_info;
mach_timebase_info(&mach_info);
uint64_t start = mach_absolute_time();
//do stuff to time
uint64_t finish = mach_absolute_time() - start;
finish *= mach_info.numer;
NSLog(@"Time in ms: %f", finish / (mach_info.denom*1000000.0f));
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